Though technically this is possible, we don’t recommend doing this as it can get complicated from a management perspective and cause unnecessary headaches for you.
If you choose this option, that means your billing & invoices will be completely different for various properties, which can get confusing. For some, you would be paying Respage in advance for your AdWords budget, plus our monthly management fee. For others, you would be billed for your PPC spend by AdWords on your credit card, and receiving a separate invoice from Respage for the management fee.
Additionally, each property that has a different billing method will need to have a separate account on AdWords. Though you’ll be able to access all of your campaigns through in one location on the Respage dashboard, if you plan to access your campaigns in AdWords, you’ll need a separate login for each.
For more answers to PPC billing questions, visit our Can I Use a Different Credit Card for Each AdWords Campaign? Topic.